K8s: Get all pods running on a node - Fri, Jun 10, 2022
K8s: Get all pods running on a node
Recently a node in our k8s cluster had networking problems and couldn’t pull images from our container registry. After finding out which node was not working correctly, I needed a way to get the name of the pods currently scheduled on that node and are in the state Pending. After looking at the kubectl jsonpath support
it turned that it only has limited jsonpath
support. Specifically operators like && and || are not supported.
So I instead used jq
which supports operators:
kubectl get pods -n my-ns -o json | jq -r '.items[] | select(.spec.nodeName=="cluster-node-1" and .status.phase=="Pending") | .metadata.name'
The get pods command returns an array of pod specifications
and their status
. The following statement selects all the pods all pods on that node and have the state Pending. The output is a list of pod names.